Chitosan-coated polarization maintaining fiber-based Sagnac interferometer for relative humidity measurement

• Main Authors: Neu, Björn, Balamurali, Papusamy, Menon, Rahul, Zu, Peng, Chen, Li Han, Chan, Chi Chiu, Li, Tao, Shaillender, Mutukumaraswamy, Ang, Xiu Min, Wong, Wei Chang, Poh, Chueh Loo, Leong, Kam Chew
• Other Authors: School of Chemical and Biomedical Engineering
• Format: Article
• Language: English
• Published: 2013
• Online Access: https://hdl.handle.net/10356/98568; http://hdl.handle.net/10220/13429
• Institution: Nanyang Technological University

A relative humidity fiber sensor based on polarization maintaining (PM) fiber Sagnac interferometery configuration is presented. The proposed sensor is functionalized with a thin layer of a moisture-sensitive natural polymer chitosan, whose degree of swelling varies as a function of relative humidit...